Journal ArticleDOI
Frequency domain equalization for single-carrier broadband wireless systems
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TLDR
This article surveys frequency domain equalization (FDE) applied to single-carrier (SC) modulation solutions and discusses similarities and differences of SC and OFDM systems and coexistence possibilities, and presents examples of SC-FDE performance capabilities.Abstract:
Broadband wireless access systems deployed in residential and business environments are likely to face hostile radio propagation environments, with multipath delay spread extending over tens or hundreds of bit intervals. Orthogonal frequency-division multiplex (OFDM) is a recognized multicarrier solution to combat the effects of such multipath conditions. This article surveys frequency domain equalization (FDE) applied to single-carrier (SC) modulation solutions. SC radio modems with frequency domain equalization have similar performance, efficiency, and low signal processing complexity advantages as OFDM, and in addition are less sensitive than OFDM to RF impairments such as power amplifier nonlinearities. We discuss similarities and differences of SC and OFDM systems and coexistence possibilities, and present examples of SC-FDE performance capabilities.read more
Citations
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Journal ArticleDOI
Advanced receiver design for quadrature OFDMA systems
Lin Luo,Jian Zhang,Zhenning Shi +2 more
TL;DR: Various detection techniques such as linear zero forcing (ZF), minimum mean square error (MMSE) equalization, decision feedback equalization (DFE), and turbo joint channel estimation and detection are investigated for Q-OFDMA systems to mitigate the noise enhancement effect and improve the bit error ratio (BER) performance.
Book ChapterDOI
On the Compensation of IQ Imbalance in an SC/FDE System
TL;DR: In this paper, the concept of a Single Carrier System with Frequency Domain Equalization (SC/FDE) was proposed for the estimation and compensation of the IQ imbalance in AWGN and multi-path propagation.
Proceedings ArticleDOI
DS-CDMA MMSE Turbo Equalization Using 2-Step Maximum Likelihood Channel Estimation
TL;DR: 2-step MLCE is applied to DS-CDMA MMSE turbo equalization and the achievable BER performance in a frequency-selective block Rayleigh fading channel is evaluated by computer simulation.
Multiplexing Invited Paper
TL;DR: GFDM enables frequency and time domain multi-user scheduling comparable to OFDM and provides an efficient alternative for white space aggregation even in heavily fragmented spectrum regions.
FPGA Implementation of 3Mbps SingleCarrier Mobile WirelessSystemwith1MHz Bandwidth
TL;DR: A FPGA implementation of single carrier (SC) wireless system with frequency domain equalization (FDE) to overcome the effects of multipath fading channels and a new packet format is proposed to reduce the error of channel estimation that occurs in the last part of the packet caused by time fluctuation of the channel.
References
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Book
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TL;DR: In this paper, the authors propose a recursive least square adaptive filter (RLF) based on the Kalman filter, which is used as the unifying base for RLS Filters.
Journal ArticleDOI
Analysis and Simulation of a Digital Mobile Channel Using Orthogonal Frequency Division Multiplexing
TL;DR: The analysis and simulation of a technique for combating the effects of multipath propagation and cochannel interference on a narrow-band digital mobile channel using the discrete Fourier transform to orthogonally frequency multiplex many narrow subchannels, each signaling at a very low rate, into one high-rate channel is discussed.
Journal ArticleDOI
BER sensitivity of OFDM systems to carrier frequency offset and Wiener phase noise
TL;DR: In this contribution the transmission of M-PSK and M-QAM modulated orthogonal frequency division multiplexed (OFDM) signals over an additive white Gaussian noise (AWGN) channel is considered and the degradation of the bit error rate is evaluated.
Journal ArticleDOI
Polyphase codes with good periodic correlation properties (Corresp.)
TL;DR: This correspondence describes the construction of complex codes of the form exp i \alpha_k whose discrete circular autocorrelations are zero for all nonzero lags.